Those are some pretty strong words against the most loyal creature associated with Human companionship. I feel like you may have been around the wrong dogs. I can assure you a number of owners of service dogs could tell you that their animal is as loyal, loving, and personable as a human being. There are studies recently done that show a number of dog breeds have the intelligence of 7-8 year olds, specifically Border Collies, Shepherd breeds, etc. I recommend watching the recent Discovery documentary called 'Dog Genius' before you rag on them. Dogs are designed to be companions, and if you ever have one for hunting, service, or other specific bred task, you'd be more aware of their characteristics. Too many people take neglected high energy black labs, etc. put in unfavorable domestic situations for being stupid and/or prototypical of the entire species...
Both animal species have great redeeming qualities as well as shortcomings...
-Proud owner of a Newfoundland Dog and German Shepherd, both as personable as can be. (I also have a DSH, equally personable, heh)